US4818067A - Fiber optic focusing device - Google Patents
Fiber optic focusing device Download PDFInfo
- Publication number
- US4818067A US4818067A US07/040,894 US4089487A US4818067A US 4818067 A US4818067 A US 4818067A US 4089487 A US4089487 A US 4089487A US 4818067 A US4818067 A US 4818067A
- Authority
- US
- United States
- Prior art keywords
- optical axis
- conical
- bores
- optical device
- holder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/32—Optical coupling means having lens focusing means positioned between opposed fibre ends
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
Definitions
- a fiber optic focusing device may be used to focus a parallel light beam onto the end of a glass fiber.
- a focusing lens is typically held in a threaded focusing ring which is itself threaded into a holder. Focus adjustments are made by rotating the ring within the holder to move the lens along the optical axis.
- the use of threads often causes tilting of the lens during rotation.
- a fiber optic focusing device is smoothly adjustable without lens tilting.
- the device includes a lens system that is linearly displaceable along the optical axis to permit focus adjustments.
- the lens system is held by a holder which is itself contained within a frame.
- Setscrews in the frame roughly perpendicular to the optical axis engage the holder to displace it along the optical axis as desired.
- the setscrews may include microthreads and may be guided in corresponding threaded bores.
- the frame may include a clamping screw for locking the holder in position relative to the frame. Since the lens system is fixed rigidly in the holder and the holder is seated in a precise parallel guide without tilting, the focusing device may be adjusted with a high degree of precision.
- FIG. 1 shows a fiber optic focusing device that is constructed in accordance with the preferred embodiment of the present invention.
- FIG. 1 shows a fiber optic focusing device 1 that is constructed in accordance with the preferred embodiment of the present invention.
- the device 1 includes a frame 3 containing a holder 5 and a lens system 7 which may be displaced along the optical axis 45.
- the frame 3 provides an exact guide for axial displacement of the holder 5 and the lens system 7.
- Conical points 15, 17 of setscrews 9, 13 engage adjusting bores 21, 23 to provide axial displacement of the holder 5.
- a clamping screw 11 may be used to fix the position of the holder 5.
- the lens system 7 consists of two plano-convex lenses 25, 27 which are fixed in the holder 5 and which are used to focus exactly a parallel light beam 47 onto the end of a glass fiber 31.
- the two setscrews 9, 13 may be used to displace the holder 5 along a defined axial path until the focus is set to the desired degree of accuracy. For example, when the setscrew 9 is turned inwards the tapered end of its conical point 15 engages an inclined surface 33 of the funnel shaped adjusting bore 21. This engagement causes the holder 5 to move in the direction 43 so that the focal point 41 is displaced as desired. Of course, both the setscrew 13 and the clamping screw 11 must be loosened prior to adjusting the setscrew 9.
- the setscrew 13 may be used to displace the focal point 41 in the opposite direction since turning the setscrew 13 inwards causes its point 17 to engage an inclined surface 19 of bore 23.
- the amount of adjustment caused by the setscrews 9, 13 may be changed by changing the angle of inclination between the optical axis 45 and the inclined surfaces 33, 19.
- the holder 5 may be locked in position with the clamping screw 11. Tilting of the holder 5 is avoided since both of the setscrews 9, 13 urge the holder 5 against the same surface 29.
- the setscrews 9, 13 may act against inclined surfaces 19, 33.
- the tapers of points 15, 17 may act against the end faces 51, 53 of the holder 5 if the end faces 51, 53 are inclined in a manner similar to the inclination of surfaces 33, 19.
- the angle of inclination relative to the optical axis should lie between 40 degrees and 80 degrees. Fine adjustments can be achieved by orienting the setscrews 9, 13 perpendicularly to the optical axis 45 so that a large setscrew movement causes only a fine axial displacement of the holder 5 if the angle of inclination is relatively steep.
- the ends of the setscrews 9, 13 may be set to the same angle of inclination as the associated inclined surfaces 19, 33.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
- Mounting And Adjusting Of Optical Elements (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3613643A DE3613643C1 (de) | 1986-04-23 | 1986-04-23 | Faseroptische Fokusiereinrichtung |
DE3613643 | 1986-04-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
US4818067A true US4818067A (en) | 1989-04-04 |
Family
ID=6299281
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/040,894 Expired - Lifetime US4818067A (en) | 1986-04-23 | 1987-04-21 | Fiber optic focusing device |
Country Status (3)
Country | Link |
---|---|
US (1) | US4818067A (ja) |
JP (2) | JPS62258412A (ja) |
DE (1) | DE3613643C1 (ja) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5087991A (en) * | 1990-11-13 | 1992-02-11 | Internatural Designs, Inc. | Multi-image viewer apparatus |
US5113290A (en) * | 1990-12-13 | 1992-05-12 | Honeywell Inc. | Sealed focusing assembly for an industrial vision system |
US5123723A (en) * | 1990-04-18 | 1992-06-23 | The United States Of America As Represented By The Secretary Of The Air Force | Ultra-high vacuum telescoping fiber optic feedthrough apparatus and method |
EP1146364A2 (de) * | 2000-02-15 | 2001-10-17 | TuiLaser AG | Vorrichtung zur Einkopplung eines Laserstrahls in eine Glasfaser |
EP3255398A1 (en) * | 2016-06-08 | 2017-12-13 | General Electric Technology GmbH | System, method and apparatus for adjusting a flame scanner |
US11327230B2 (en) | 2018-02-20 | 2022-05-10 | Sumitomo Electric Optifrontier Co., Ltd. | Optical fiber holder |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0392614U (ja) * | 1990-01-12 | 1991-09-20 | ||
JPH0411505U (ja) * | 1990-05-18 | 1992-01-30 | ||
DE4209926C2 (de) * | 1992-03-24 | 1996-07-25 | Charite Med Fakultaet | Handstück für medizinische Laseranwendungen |
FR2740879B1 (fr) * | 1995-11-06 | 1997-12-26 | Univ Toulon & Du Var Lab | Coupleur laser-fibre optique pour laser de puissance |
US9223091B2 (en) * | 2013-02-28 | 2015-12-29 | The United States Of America As Represented By The Secretary Of The Army | Light beam collimator particularly suitable for a densely packed array |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3751139A (en) * | 1971-07-12 | 1973-08-07 | Union Carbide Corp | Optical mounting device for use in laser systems |
US4408830A (en) * | 1981-03-02 | 1983-10-11 | The United States Of America As Represented By The Secretary Of The Navy | Multidirectional translator mechanism |
US4589744A (en) * | 1984-03-08 | 1986-05-20 | Tokyo Kogaku Kikai Kabushiki Kaisha | Telescope with adjustable reticule |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6028717B2 (ja) * | 1978-04-24 | 1985-07-06 | スズキ株式会社 | オ−トバイの後輪懸架装置 |
JPS58150915A (ja) * | 1982-03-03 | 1983-09-07 | Mitsubishi Electric Corp | 発光装置 |
JPS6028717U (ja) * | 1983-08-01 | 1985-02-26 | シャープ株式会社 | 内鏡筒の微調整機構 |
JPH042416Y2 (ja) * | 1985-09-21 | 1992-01-28 |
-
1986
- 1986-04-23 DE DE3613643A patent/DE3613643C1/de not_active Expired
-
1987
- 1987-04-21 US US07/040,894 patent/US4818067A/en not_active Expired - Lifetime
- 1987-04-23 JP JP62100937A patent/JPS62258412A/ja active Pending
-
1992
- 1992-04-09 JP JP1992030476U patent/JP2539714Y2/ja not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3751139A (en) * | 1971-07-12 | 1973-08-07 | Union Carbide Corp | Optical mounting device for use in laser systems |
US4408830A (en) * | 1981-03-02 | 1983-10-11 | The United States Of America As Represented By The Secretary Of The Navy | Multidirectional translator mechanism |
US4589744A (en) * | 1984-03-08 | 1986-05-20 | Tokyo Kogaku Kikai Kabushiki Kaisha | Telescope with adjustable reticule |
Non-Patent Citations (2)
Title |
---|
Dickson et al., "Laser Beam Expander & Focusing Lens System", IBM Tech. Disc. Bull., 4-1975, p. 34114. |
Dickson et al., Laser Beam Expander & Focusing Lens System , IBM Tech. Disc. Bull., 4 1975, p. 34114. * |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5123723A (en) * | 1990-04-18 | 1992-06-23 | The United States Of America As Represented By The Secretary Of The Air Force | Ultra-high vacuum telescoping fiber optic feedthrough apparatus and method |
US5087991A (en) * | 1990-11-13 | 1992-02-11 | Internatural Designs, Inc. | Multi-image viewer apparatus |
US5113290A (en) * | 1990-12-13 | 1992-05-12 | Honeywell Inc. | Sealed focusing assembly for an industrial vision system |
EP1146364A2 (de) * | 2000-02-15 | 2001-10-17 | TuiLaser AG | Vorrichtung zur Einkopplung eines Laserstrahls in eine Glasfaser |
EP1146364A3 (de) * | 2000-02-15 | 2002-08-07 | TuiLaser AG | Vorrichtung zur Einkopplung eines Laserstrahls in eine Glasfaser |
EP3255398A1 (en) * | 2016-06-08 | 2017-12-13 | General Electric Technology GmbH | System, method and apparatus for adjusting a flame scanner |
CN107477609A (zh) * | 2016-06-08 | 2017-12-15 | 通用电器技术有限公司 | 用于调节火焰监测器的系统、方法和设备 |
US10067292B2 (en) | 2016-06-08 | 2018-09-04 | General Electric Technology Gmbh | System, method and apparatus for adjusting a flame scanner |
US11327230B2 (en) | 2018-02-20 | 2022-05-10 | Sumitomo Electric Optifrontier Co., Ltd. | Optical fiber holder |
Also Published As
Publication number | Publication date |
---|---|
JPH0521217U (ja) | 1993-03-19 |
DE3613643C1 (de) | 1988-01-28 |
JPS62258412A (ja) | 1987-11-10 |
JP2539714Y2 (ja) | 1997-06-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: HEWLETT-PACKARD, BOEBLINGEN, GERMANY, A CORP. OF G Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:MAISENBACHER, BERND;VOZDECKY, RUDOLF;REEL/FRAME:004733/0688 Effective date: 19870527 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
FPAY | Fee payment |
Year of fee payment: 8 |
|
AS | Assignment |
Owner name: HEWLETT-PACKARD COMPANY, A DELAWARE CORPORATION, C Free format text: MERGER;ASSIGNOR:HEWLETT-PACKARD COMPANY, A CALIFORNIA CORPORATION;REEL/FRAME:010841/0649 Effective date: 19980520 |
|
AS | Assignment |
Owner name: AGILENT TECHNOLOGIES INC., CALIFORNIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HEWLETT-PACKARD COMPANY, A DELAWARE CORPORATION;REEL/FRAME:010901/0336 Effective date: 20000520 |
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FPAY | Fee payment |
Year of fee payment: 12 |
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REMI | Maintenance fee reminder mailed |